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摘要
申请公布号
JPS54103247(U)
申请公布日期
1979.07.20
申请号
JP19780000046U
申请日期
1977.12.28
申请人
发明人
分类号
G04B19/14;(IPC1-7):G04B19/14
主分类号
G04B19/14
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